Comcast in TN here and no probs at all as far as I can see.
I did have the 30/5 plan and it worked great. Just upgraded to 100/20 to improve my streaming and it still works great.
Only thing I don't like is the 300GB data cap.
I think the instancing system of E

is very much a work in progress because dropping instances is very common but I do not think this is related to my internet connection.
Many times I will see "dead" or "ghost" ships which are indestructible and flying in repetitive patterns.